Python：每日一题 162：将1~50的阶乘排在一起打印出来

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本文介绍了一个简单的Python程序，该程序用于计算并打印1至50的阶乘序列，每行打印40个数字，并在每行开头显示行号。

我们知道1的阶乘是1，2的阶乘是2，3的阶乘是6，4的阶乘是24，将前4个数字的阶乘排在一起是12624，现在要求将1~50的阶乘排在一起打印出来，要求，每40个数字1行，当本行超过40个时换行到下一行，另外在每行的开头打印行号。最终的结果如下所示：

( 1)  1262412072050404032036288036288003991680
( 2)  0479001600622702080087178291200130767436
( 3)  8000209227898880003556874280960006402373
( 4)  7057280001216451004088320002432902008176
( 5)  6400005109094217170944000011240007277776
( 6)  0768000025852016738884976640000620448401
( 7)  7332394393600001551121004333098598400000
( 8)  0403291461126605635584000000108888694504
( 9)  1835216076800000030488834461171386050150
(10)  4000000884176199373970195454361600000026
(11)  5252859812191058636308480000000822283865
(12)  4177922817725562880000000263130836933693
(13)  5301672180121600000008683317618811886495
(14)  5181944012800000002952327990396041408476
(15)  1860964352000000010333147966386144929666
(16)  6513375232000000003719933267899012174679
(17)  9944815083520000000013763753091226345046
(18)  3159795815809024000000005230226174666011
(19)  1176000722410007429120000000020397882081
(20)  1974433586402817399028973568000000008159
(21)  1528324789773434561126959611589427200000
(22)  0000334525266131638071081700620534407516
(23)  6515200000000014050061177528798985431426
(24)  0624451156993638400000000060415263063373
(25)  8356373551320685139975072645120000000002
(26)  6582715747884487680436258110146158903196
(27)  3852800000000011962222086548019456196316
(28)  1495657715064383733760000000000550262215
(29)  9812088949850305428800254892961651752960
(30)  0000000002586232415111681806429643551536
(31)  1197996919763238912000000000012413915592
(32)  5360726708622890473733750385214863546777
(33)  6000000000060828186403426756087225216332
(34)  1295376887552831379210240000000000304140
(35)  9320171337804361260816606476884437764156
(36)  8960512000000000000

Python源码：

string = ''
s = 1
for i in range(1, 51):
    s *= i
    string += str(s)
i = 0
while len(string) > 0:
    i += 1
    print("(%2d)" % i, end='  ')
    print(string[:40])
    string = string[40:]